Rain slows Georgia 400 express lanes work in Forsyth County
Rain slowed Georgia 400 express lanes crews in Forsyth County, but GDOT says the 16-mile project from North Springs to north of McFarland Parkway stayed on schedule.
Rain briefly slowed the Georgia 400 express lanes job in Forsyth County, but GDOT said the 16-mile project remained on schedule, leaving commuters with a more practical question than a construction update: how much longer will south Forsyth drivers keep feeling the work on the road?
The slowdown matters because SR 400 is one of the region’s most important commuter corridors, and the project already reaches into the daily routines of people heading to school drop-offs, work, deliveries and weekend errands. When weather pushes back field work, the impact is not abstract. Grading, paving, drainage work, lane shifts and erosion-control tasks all depend on dry conditions, so even a short stretch of rain can delay progress without changing the larger timeline.
GDOT’s May newsletter said construction activity was ramping up corridor-wide, with drain inspections, grubbing, erosion-control work and intermittent overnight lane closures already under way. Early work was identified near Exit 5, Holcomb Bridge Road and the McGinnis Ferry Road to McFarland Parkway area, including the Tradewinds Parkway MARTA park-and-ride. That means drivers should expect the next visible changes to show up in work zones and traffic patterns, not in any quick relief for the corridor.
The express lanes project covers about 16 miles of Georgia 400 from the MARTA North Springs Station in Fulton County to just north of McFarland Parkway in Forsyth County. GDOT said heavy construction was expected to begin in April 2026, with completion targeted for 2031. The work is part of the agency’s Major Mobility Investment Program and is being delivered through a public-private partnership with SRTA and SR 400 Peach Partners.
For motorists, the key point is that the project is still moving ahead even if rain slows the pace from time to time. GDOT says the managed lanes are meant to reduce congestion, improve travel-time reliability and support future MARTA bus rapid transit service along the corridor. MARTA’s planned GA 400 BRT line would connect North Springs Station to the Windward Parkway Park and Ride, with four station locations north of North Springs.
The project broke ground on April 22, 2026, with state, federal and regional leaders in attendance. As crews move from prep work into heavier construction later this summer, commuters in Forsyth County will keep seeing the corridor’s biggest promise and its biggest inconvenience at the same time, a longer-term fix built through short-term disruption.
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